CN208400904U - A kind of battery case, power module and battery pack - Google Patents
A kind of battery case, power module and battery pack Download PDFInfo
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- CN208400904U CN208400904U CN201821069973.0U CN201821069973U CN208400904U CN 208400904 U CN208400904 U CN 208400904U CN 201821069973 U CN201821069973 U CN 201821069973U CN 208400904 U CN208400904 U CN 208400904U
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- battery
- heat conducting
- conducting body
- elastic heat
- spaced walls
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a kind of battery case, power module and battery packs.The battery case includes: shell comprising side wall and bottom wall；Enclosure interior is divided into several slots by the one or more spaced walls being arranged inside housings；Elastic heat conducting body is arranged on the inner surface of the side wall of the shell and the surface of the spaced walls, so that being both provided with elastic heat conducting body on the side for the slot distinguished by the spaced walls.Battery case according to the present utility model and battery pack play the role of thermally conductive and buffer with elastic heat conducting body, to both make state of temperature when battery pack long-term work uniformly and stablize, again battery pack is buffered when being shaken or impacting, the problems such as preventing short circuit, leakage, improves safety.
Description
Technical field
The utility model relates to a kind of battery case, a kind of power module and battery packs.Specifically, the utility model
It is related to a kind of for power battery, the battery case that in cabinet and in spaced walls includes elastic heat conducting unit, one kind is by elasticity
Heat carrier wraps up the power module and battery pack of battery core or battery.
Background technique
With the development of new energy, lithium ion battery the advantages that its high-energy density to have received widespread attention.?
Electric automobiles are needed using big energy, high-power lithium ion battery.Thus also produce it is a series of be related to safety, can
By property etc. the problem of.
In power lithium-ion battery, due to needing high-energy density, battery core or battery all in a manner of battery pack in groups
It uses；And current density when its use is high, therefore battery can generate comparable heat during use.Therefore in battery pack
The battery core of heart position or the heat of battery are not easy to shed, and the operating temperature of the battery core or battery that lead to different location is different for a long time,
So that battery core or the performance of battery gradually appear difference, deteriorate durability.
CN105742756A has used a kind of shell with multiple slot structures to place battery core, to make centre bit when work
The temperature for the battery core set is conducted by spaced walls.But since there are the left sides 0.5mm for battery core thickness in lithium ion battery production technology
Right uncertainty, leads to battery core and spaced walls insufficient contact.In addition, electric when being shaken, impacting when in use
The risk that breakage, leakage, short circuit etc. occur for core improves.
Further, since cost reason, the battery case for developing the power battery of new specification can generate a considerable amount of expense,
It may relate to the adjustment, performance test, security screening etc. of battery specifications.
Therefore, there is still a need for new, more reliable performance battery box component.
Utility model content
Inventor the product demand for considering battery case and change configuration aspects it is restricted after, pass through experiment hair
It is existing, thermal conductivity, impact resistance can be met using elastic heat conducting unit simultaneously and do not change the integrally-built requirement of the prior art,
The utility model is completed on this basis.
One purpose of the utility model is to provide a kind of battery case.
The further object of the utility model is to provide a kind of power module.
Another purpose of the utility model, which is to provide, a kind of contains the battery of the battery case or the power module
Group.
One aspect according to the present utility model provides a kind of battery case, which includes:
Shell comprising side wall and bottom wall；
Enclosure interior is divided into several slots by the one or more spaced walls being arranged inside housings, and the slot is used for
Accommodate battery core or battery；
Elastic heat conducting body is arranged on the inner surface of the side wall of the shell and the surface of the spaced walls, so that
Elastic heat conducting body is both provided on the side for the slot distinguished by the spaced walls.
Other side according to the present utility model provides a kind of power module, including
Battery core or battery；And
Elastic heat conducting body is arranged on the side of the battery core or battery to wrap up the battery core or battery.
Preferably, elastic heat conducting body is also equipped in the battery core or the bottom surface of battery.
Other side according to the present utility model provides a kind of battery pack, which includes
Shell comprising side wall and bottom wall；
Enclosure interior is divided into several slots by the one or more spaced walls being arranged inside housings；
Battery core or battery are contained in several described slots；And
Elastic heat conducting body, be arranged on the inner surface of the side wall of the shell and the surface of the spaced walls make by
It is both provided with elastic heat conducting body on the side for the slot that the spaced walls are distinguished or the battery core or battery is arranged in it
To wrap up the battery core or battery on side.
The shell can be copper or aluminium casing.
Preferably, the elastic heat conducting body is heat-conducting silica gel sheet or the heat-conducting layer that is formed by heat-conducting cream.
Preferably, the thermal coefficient > 1.8W/ (mK) of the elastic heat conducting body, with a thickness of 50 μm~5mm.
Preferably, elastic heat conducting body is also equipped in the inner surface of the bottom wall of shell, or in the battery core or battery
Elastic heat conducting body is also equipped in bottom surface.
Preferably, the elastic heat conducting body is connected to radiator.
Preferably, the spaced walls are copper sheet or aluminium flake, using as radiator.
Beneficial effect
Battery case according to the present utility model and battery pack play the role of thermally conductive and buffer with elastic heat conducting body, thus both
So that state of temperature when battery pack long-term work is uniformly and stable, and battery pack is obtained when being shaken or impacting
The problems such as to buffer, prevent short circuit, leakage, improve safety.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the battery case of an embodiment of the utility model.
Fig. 2 is the sectional view according to the battery case of an embodiment of the utility model.
Fig. 3 is the sectional view according to the battery pack of an embodiment of the utility model.
Appended drawing reference:
10: battery case
101: shell
102: spaced walls
103: elastic heat conducting body
1021: slot
20: battery core
Specific embodiment
It is careful with regard to explanation below to make this field have the characteristics that the personnel of general knowledge can be appreciated that the utility model and effect
The term and term referred in book and claim carries out general explanation and definition.Unless otherwise specified, otherwise literary
Used in all technologies and scientific words, all have those skilled in the art the utility model is understood it is usual
Meaning should be subject to the definition of this specification when there is collision scenario.
Herein, term "comprising", " comprising ", " having ", " containing " or other any similar terms belong to open
Property conjunction (open-ended transitional phrase), be intended to cover nonexcludability include object.For example,
A composition or product containing plural element are not limited in these elements listed herein, but may also include not
Be expressly recited but the usually intrinsic other element of the composition or product.In addition to this, unless expressly stated to the contrary,
Otherwise term "or" refers to the "or" of covering property, without referring to exclusive "or".For example, following any one situation is all satisfied
Condition " A or B ": A is true (or presence) and B is pseudo- (or being not present), A is pseudo- (or being not present) and B is true (or presence), A and B
It is true (or presence).In addition, herein, the interpretation of term "comprising", " comprising ", " having ", " containing " should be regarded as having had
Body disclose and cover simultaneously " by ... formed " and closed or semi-enclosed conjunction such as " substantially by ... formed ".
Following specific embodiments are substantially only illustrative, and be not intended to limitation the utility model and application thereof.In addition,
Herein not by any described in the aforementioned prior art or utility model content or following specific embodiments or embodiment
Theoretical limitation.
The considerations of in safety, lithium ion battery and battery pack have when in use various protection circuits or other rise
To the electronic device of the effect of burning voltage or electric current.In the present invention, battery core refers to not include the electrification for protecting circuit
Learn components；And battery refers to the electrochemical assembly part including protecting circuit and battery core substantially；And battery pack refer to by
Multiple batteries by series connection and/or parallel connection after, further comprise or do not include other electronic devices electrochemical assembly part.
Electronic device described herein only refers to the purpose in protection battery core and limits, the device of the effect of burning voltage or electric current.
Fig. 1 shows the schematic diagram of the battery case of an embodiment according to the present utility model.In Fig. 1, battery case
10 include shell 101, spaced walls 102 and elastic heat conducting body 103.As shown in Figure 1, battery case is divided into 4 slots by spaced walls 102
1021, to accommodate battery core or battery.The side wall (not specific label) of the shell and described is arranged in elastic heat conducting body 103
On the surface of spaced walls 102, so that being both provided with elastic heat conducting on the side for the slot 1021 distinguished by the spaced walls 102
Body 103.
In Fig. 1, the not set heat-conducting elastomer of the bottom wall of shell 101, it will be appreciated by a person skilled in the art that in bottom wall
Also heat-conducting elastomer can be set.Fig. 2 is the sectional view according to the battery case of an embodiment of the utility model.Such as Fig. 2
Shown in, heat-conducting elastomer is also equipped in the inner surface of the bottom wall of shell 101.
Fig. 3 is the sectional view according to the battery pack of an embodiment of the utility model.As shown in figure 3, in battery case
Slot in be provided with battery core 20.
It will be understood by those skilled in the art that the side for wrapping up the battery core 20 also can be set into heat-conducting elastomer, and
And it can be set into while wrapping up the bottom of the battery core 20.
Heat-conducting elastomer in Fig. 1 can be connected further on radiator (not shown).The radiator does not have
Special limitation, can be the cooling fin conventionally used for heat dissipation, such as with the sheet metal of large surface area, especially copper sheet or aluminium
Piece etc..
Alternatively, the spaced walls 102 and shell 101 in Fig. 1 can be made of copper or aluminium, to directly play radiator
Effect.
By the way that elastic heat conducting body is arranged in slot, the thickness that thermally conductive, shock resistance and reduction are produced by battery core can be realized simultaneously
It is influenced caused by degree is uncertain.Specifically, the battery core at battery pack center exists since the elastic heat conducting body thermal coefficient is high
The heat generated when work can also be pulled away easily, so that the working environment of the battery core of different location or battery is kept
Unanimously, further such that battery core or the performance of battery will not generate too many differences, the durability of battery pack is improved.And due to bullet
Part energy can be absorbed when battery pack receives impact in the elasticity of property heat carrier, to improve the safety of battery pack
Property.In addition, also due to the elasticity of elastic heat conducting body, so that the uncertainty (or inconsistency, error) of thickness is led when because of production
The cell thickness unevenness of cause can be balanced by the elasticity of elastic heat conducting body.
Embodiment
To further describe the utility model by embodiment below, however it will be appreciated by those skilled in the art that these
Embodiment is only used for purpose of explanation, and is not intended to limit the scope of the utility model, and the scope of the utility model is with institute
Subject to attached claims.
Embodiment 1
Structure setting battery case as shown in Figure 3 and battery core, wherein battery case is made of aluminum, and spaced walls are by 30 μ m-thicks
Aluminium flake is made, and heat-conducting silica gel sheet is arranged in the side and bottom surface of slot, and with a thickness of 70 μm, thermal coefficient is 5.0W/ (mK),
Used single battery core specification is thickness * wide * long=20*55*165mm, and capacity is 6150~6180mAh.By above-mentioned 4 battery cores
Group is combined into a battery pack.
Embodiment 2
It is made outside spaced walls in addition to being made of copper battery case, and by copper sheet, prepares battery in the same manner as example 1
Group.
Embodiment 3
Heat-conducting silica gel sheet is replaced in addition to forming heat-conducting layer with heat-conducting cream, and it is with a thickness of 100 μm, thermal coefficient 4.0W/
(mK) other than, prepare battery pack in the same manner as example 1.
Embodiment 4
It is made outside spaced walls in addition to being made of copper battery case, and by copper sheet, battery is prepared in mode same as Example 3
Group.
Comparative example 1
In addition to not introducing heat conductive silica gel, and the thickness of aluminum material spaced walls is adjusted to 100 μm so that the specification of slot meets
Other than battery core specification, prepare battery pack in the same manner as example 1.
EXPERIMENTAL EXAMPLE
The temperature difference and voltage difference delta V are measured by the following method
Thermal diffusivity test (DEG C): thermocouple is attached in the battery core at battery pack center to record temperature change.In room temperature (25
DEG C) under, battery is charged to 100%, with 5C multiplying power discharging, the temperature change of embodiment 1-4 and comparative example 1 is recorded, uses
Wherein maximum value subtracts minimum value, obtains thermal diffusivity test result.
Voltage difference delta V (mV): battery is charged to 50%SOC (State of Charge i.e. state-of-charge), records V1, so
Afterwards by battery pack in 2m height freely falling body, cell voltage V2, Δ V=V1-V2 are measured later.
The result of above-mentioned thermal diffusivity test and voltage difference test is listed in table 1.
| Thermal diffusivity tests (DEG C) | ΔV(mv) | |
| Embodiment 1 | 8 | 0 |
| Embodiment 2 | 7 | 45 |
| Embodiment 3 | 5 | 60 |
| Embodiment 4 | 6 | 50 |
| Comparative example 1 | 12 | 100 |
From the results shown in Table 1, the heat dissipation of battery case according to the present utility model and battery pack prepared therefrom
Property is excellent.In addition, can be seen that the battery case of the utility model by the test result of voltage difference delta V (mV) and by its system
Standby battery pack has superior shock resistance.
Although embodiment 1-4 gives the illustrative embodiment of the utility model, those skilled in the art can be with
Understand, for the utility model, acceptable there are many other embodiments.
Claims (6)
1. a kind of battery case characterized by comprising
Shell comprising side wall and bottom wall；
Enclosure interior is divided into several slots by the one or more spaced walls being arranged inside housings, and the slot is for accommodating
Battery core or battery；
Elastic heat conducting body is arranged on the inner surface of the side wall of the shell and the surface of the spaced walls, so that by institute
It states and is both provided with elastic heat conducting body on the side of the slot of spaced walls differentiation.
2. battery case according to claim 1, which is characterized in that
The shell is copper or aluminium casing；And/or
The elastic heat conducting body is heat-conducting silica gel sheet or the heat-conducting layer that is formed by heat-conducting cream；And/or
The elastic heat conducting body with a thickness of 50 μm~5mm；And/or
Elastic heat conducting body is also equipped in the inner surface of the bottom wall of shell；And/or
The elastic heat conducting body is connected to radiator；And/or
The spaced walls are copper sheet or aluminium flake.
3. a kind of power module characterized by comprising
Battery core or battery；And
Elastic heat conducting body is arranged on the side of the battery core or battery to wrap up the battery core or battery.
4. power module according to claim 3, which is characterized in that
The elastic heat conducting body is heat-conducting silica gel sheet or the heat-conducting layer that is formed by heat-conducting cream；And/or
The elastic heat conducting body with a thickness of 50 μm~5mm；And/or
Elastic heat conducting body is provided in the battery core or the bottom surface of battery.
5. a kind of battery pack, which is characterized in that the battery pack includes:
Shell comprising side wall and bottom wall；
Enclosure interior is divided into several slots by the one or more spaced walls being arranged inside housings；
Battery core or battery are contained in several described slots；And
Elastic heat conducting body is arranged on the inner surface of the side wall of the shell and the surface of the spaced walls and makes by described
Elastic heat conducting body or its side that battery core or battery are set are both provided on the side for the slot that spaced walls are distinguished
On to wrap up the battery core or battery.
6. battery pack according to claim 5, which is characterized in that
The shell is copper or aluminium casing；And/or
The elastic heat conducting body is heat-conducting silica gel sheet or the heat-conducting layer that is formed by heat-conducting cream；And/or
The elastic heat conducting body with a thickness of 50 μm~5mm；And/or
It is also equipped with elastic heat conducting body in the inner surface of the bottom wall of shell, or in the battery core or the bottom surface of battery
It is provided with elastic heat conducting body；And/or
The elastic heat conducting body is connected to radiator；And/or
The spaced walls are copper sheet or aluminium flake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821069973.0U CN208400904U (en) | 2018-07-06 | 2018-07-06 | A kind of battery case, power module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821069973.0U CN208400904U (en) | 2018-07-06 | 2018-07-06 | A kind of battery case, power module and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN208400904U true CN208400904U (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821069973.0U Active CN208400904U (en) | 2018-07-06 | 2018-07-06 | A kind of battery case, power module and battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899445A (en) * | 2018-07-06 | 2018-11-27 | 江苏卓高新材料科技有限公司 | A kind of battery case, power module and battery pack |
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2018
- 2018-07-06 CN CN201821069973.0U patent/CN208400904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899445A (en) * | 2018-07-06 | 2018-11-27 | 江苏卓高新材料科技有限公司 | A kind of battery case, power module and battery pack |
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